Constructed of tough unbreakable stainless steel, inside and out. Insulated stainless steel cup with extra large capacity: Hold over 100 ounces. Rugged, easy-to-carry ring grip handle designed to fit any size hand comfortably. The best insulation. Hotter longer - over 12 hours. Colder longer - over 24 hours. Superior vacuum created through the Thermos patented manufacturing process. This vacuum prevents heat and cold transfer longer than any other insulation on the market. Unbreakable stainless steel interior. Unbreakable stainless steel exterior. Roll-stop allows bottle to be placed in the car, truck, at campsite or worksite without rolling. Twist N Pour Stopper allows you to pour without removing the stopper. Lifetime guarantee.